When creating device filter for a new or existing dynamic group you sometimes find yourself in the position where you want to add a top-most including/excluding condition, but it's too late for that: you already have 5-10 conditions in place.

Example:

Let's say you have this existing/already typed filter:

Custom attribute "office" equals "x"
AND Model Identifier starts with "iPad*"
AND (
    Static group equals "foo"
    OR Static group equals "bar"
)

And want to make some special devices part of the group too, based on a vip custom attribute.

What you need in the end is:

(
    Custom attribute "office" equals "hq"
    AND Model Identifier starts with "iPad*"
    AND (
        Static group equals "foo"
        OR Static group equals "bar"
    )
)
OR Custom attribute "vip" equals "true"

But you currently can't achieve this using the UI without deleting every condition and starting over.